Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 337 [Rate centres in NPA 337] [Dial plan for NPA 337]

NXX: 604

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
337-604 A Cecelia LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488      
337-604 2 Cecelia LA LFYTLAMAX9Y  749E ONVOY, LLC - LA 488   2023-10-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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